MAX409:Single, Dual, Quad, 1.2µA Max, Single-Supply Op Amps

The MAX406/MAX407/MAX409/MAX417–MAX419 are single, dual, and quad low-voltage, micropower, precision op amps designed for battery-operated systems. They feature a supply current of less than 1.2µA per amplifier that is relatively constant over the entire supply range, which represents a 15 to 20 times improvement over industry-standard micropower op amps. A unique output stage enables these op amps to operate at ultra-low supply current while maintaining linearity under loaded conditions. In addition, the output is capable of sourcing 1.8mA when powered by a 9V battery. The common-mode input-voltage range extends from the negative rail to within 1.1V of the positive supply (for the singes, 1.2V for the duals and quads), and the output stage swings rail-to-rail. The entire family is designed to maintain good DC characteristics over the operating temperature range, minimizing the input referred errors. The MAX406 is a single op amp with two modes of operation: compensated mode and decompensated mode. Floating BW (pin 8) or connecting it to V- internally compensates the amplifier. In this mode, the MAX406 is unity-gain stable with a 5V/ms typical slew rate and an 8kHz gain bandwidth. Connecting BW to V+ puts the MAX406 into decompensated mode with a 20V/ms typical slew rate and a 40kHz gain bandwidth (AVCL ≥ 2V/V). The dual MAX407 and quad MAX418 are internally compensated to be unity-gain stable. The MAX409/MAX417/MAX419 single/dual/quad op amps feature 150kHz typical bandwidth, 75V/ms slew rate, and stability for gains of 10V/V or greater.

Key Features
  • 1.2µA Max Quiescent Current per Amplifier
  • +2.5V to +10V Single-Supply Range
  • 500µV Max Offset Voltage (MAX406A/MAX409A)
  • < 0.1pA Typical Input Bias Current
  • Output Swings Rail-to-Rail
  • Input Voltage Range Includes Negative Rail
MAX406, MAX407, MAX409, MAX417, MAX418, MAX419: Typical Operating Circuit
MAX406, MAX407, MAX409, MAX417, MAX418, MAX419: Typical Operating Circuit
  • Battery-Powered Systems
  • Cordless Phones
  • Electrometer Amplifiers
  • Glucose Meters
  • GPS Solutions
  • Intrinsically Safe Systems
  • IP Camera
  • Medical Instruments
  • Panel Meters
  • pH Meters
  • Photodiode Pre-Amps
  • Power Meters
  • Programmable Logic Controllers (PLCs)
titleDownload file
MAX406-MAX419 Data SheetMAX406-MAX419.pdf
Part NumberAmps.Rail to RailVSUPPLY (Total)
ICC per Amp.
Low Input Bias CMOS InputsInput IBIAS
Unity Gain BW
Slew Rate
minmaxtypmaxtyptypmaxtyptyp<See Notes
MAX4061Output Only2.51015008086Yes0.010.0040.005150CDIP(N)/8
$2.60 @1k
$4.46 @1k
$3.74 @1k
$4.09 @1k
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX409ACPANo Longer AvailableMAX409ACPA+PDIP(N),;8 pin;79.7 mm²0°C to +70°CNo
MAX409ACPA+ActivePDIP(N),;8 pin;79.7 mm²0°C to +70°CLead Free
MAX409ACSANo Longer AvailableMAX409ACSA+SOIC(N),;8 pin;30.9 mm²0°C to +70°CNo
MAX409ACSA+ActiveSOIC(N),;8 pin;30.9 mm²0°C to +70°CLead Free
MAX409ACSA+TActiveSOIC(N),;8 pin;30.9 mm²0°C to +70°CLead Free
MAX409ACSA-TNo Longer AvailableMAX409ACSA+TN.SO;8 pin0°C to +70°CSee data sheet
MAX409AEPANo Longer AvailablePDIP(N),;8 pin;79.7 mm²-40°C to +85°CNo
MAX409AESANo Longer AvailableMAX409AESA+SOIC(N),;8 pin;30.9 mm²-40°C to +85°CNo
MAX409AESA+ActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX409AESA+TActiveN.SO;8 pin-40°C to +85°CSee data sheet
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX409AESA-TNo Longer AvailableMAX409AESA+TN.SO;8 pin-40°C to +85°CSee data sheet
MAX409AMJANo Longer AvailableCDIP(N),;8 pin;82.6 mm²-55°C to +125°CNo
MAX409BCPANo Longer AvailableMAX409BCPA+PDIP(N),;8 pin;79.7 mm²0°C to +70°CNo
MAX409BCPA+ActivePDIP(N),;8 pin;79.7 mm²0°C to +70°CLead Free
MAX409BCSANo Longer AvailableMAX409BCSA+SOIC(N),;8 pin;30.9 mm²0°C to +70°CNo
MAX409BCSA+ActiveSOIC(N),;8 pin;30.9 mm²0°C to +70°CLead Free
MAX409BCSA+TActiveN.SO;8 pin0°C to +70°CSee data sheet
MAX409BCSA-TNo Longer AvailableMAX409BCSA+TSOIC(N),;8 pin;30.9 mm²0°C to +70°CNo
MAX409BEPANo Longer AvailableMAX409BEPA+PDIP(N),;8 pin;79.7 mm²-40°C to +85°CNo
MAX409BEPA+ActivePDIP(N),;8 pin;79.7 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX409BESANo Longer AvailableMAX409BESA+SOIC(N),;8 pin;30.9 mm²-40°C to +85°CNo
MAX409BESA+ActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX409BESA+TActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX409BESA-TNo Longer AvailableMAX409BESA+TSOIC(N),;8 pin;30.9 mm²-40°C to +85°CNo
MAX406-MAX419.pdf MAX417
MAX406-MAX419.pdf MAX419